diff --git a/libc/kernel/uapi/sound/tlv.h b/libc/kernel/uapi/sound/tlv.h
index 9a5c521..0822429 100644
--- a/libc/kernel/uapi/sound/tlv.h
+++ b/libc/kernel/uapi/sound/tlv.h
@@ -29,18 +29,26 @@
 #define SNDRV_CTL_TLVT_CHMAP_PAIRED 0x103
 #define SNDRV_CTL_TLVD_ITEM(type,...) (type), SNDRV_CTL_TLVD_LENGTH(__VA_ARGS__), __VA_ARGS__
 #define SNDRV_CTL_TLVD_LENGTH(...) ((unsigned int) sizeof((const unsigned int[]) { __VA_ARGS__ }))
+#define SNDRV_CTL_TLVO_TYPE 0
+#define SNDRV_CTL_TLVO_LEN 1
 #define SNDRV_CTL_TLVD_CONTAINER_ITEM(...) SNDRV_CTL_TLVD_ITEM(SNDRV_CTL_TLVT_CONTAINER, __VA_ARGS__)
 #define SNDRV_CTL_TLVD_DECLARE_CONTAINER(name,...) unsigned int name[] = { SNDRV_CTL_TLVD_CONTAINER_ITEM(__VA_ARGS__) }
 #define SNDRV_CTL_TLVD_DB_SCALE_MASK 0xffff
 #define SNDRV_CTL_TLVD_DB_SCALE_MUTE 0x10000
 #define SNDRV_CTL_TLVD_DB_SCALE_ITEM(min,step,mute) SNDRV_CTL_TLVD_ITEM(SNDRV_CTL_TLVT_DB_SCALE, (min), ((step) & SNDRV_CTL_TLVD_DB_SCALE_MASK) | ((mute) ? SNDRV_CTL_TLVD_DB_SCALE_MUTE : 0))
 #define SNDRV_CTL_TLVD_DECLARE_DB_SCALE(name,min,step,mute) unsigned int name[] = { SNDRV_CTL_TLVD_DB_SCALE_ITEM(min, step, mute) }
+#define SNDRV_CTL_TLVO_DB_SCALE_MIN 2
+#define SNDRV_CTL_TLVO_DB_SCALE_MUTE_AND_STEP 3
 #define SNDRV_CTL_TLVD_DB_MINMAX_ITEM(min_dB,max_dB) SNDRV_CTL_TLVD_ITEM(SNDRV_CTL_TLVT_DB_MINMAX, (min_dB), (max_dB))
 #define SNDRV_CTL_TLVD_DB_MINMAX_MUTE_ITEM(min_dB,max_dB) SNDRV_CTL_TLVD_ITEM(SNDRV_CTL_TLVT_DB_MINMAX_MUTE, (min_dB), (max_dB))
 #define SNDRV_CTL_TLVD_DECLARE_DB_MINMAX(name,min_dB,max_dB) unsigned int name[] = { SNDRV_CTL_TLVD_DB_MINMAX_ITEM(min_dB, max_dB) }
 #define SNDRV_CTL_TLVD_DECLARE_DB_MINMAX_MUTE(name,min_dB,max_dB) unsigned int name[] = { SNDRV_CTL_TLVD_DB_MINMAX_MUTE_ITEM(min_dB, max_dB) }
+#define SNDRV_CTL_TLVO_DB_MINMAX_MIN 2
+#define SNDRV_CTL_TLVO_DB_MINMAX_MAX 3
 #define SNDRV_CTL_TLVD_DB_LINEAR_ITEM(min_dB,max_dB) SNDRV_CTL_TLVD_ITEM(SNDRV_CTL_TLVT_DB_LINEAR, (min_dB), (max_dB))
 #define SNDRV_CTL_TLVD_DECLARE_DB_LINEAR(name,min_dB,max_dB) unsigned int name[] = { SNDRV_CTL_TLVD_DB_LINEAR_ITEM(min_dB, max_dB) }
+#define SNDRV_CTL_TLVO_DB_LINEAR_MIN 2
+#define SNDRV_CTL_TLVO_DB_LINEAR_MAX 3
 #define SNDRV_CTL_TLVD_DB_RANGE_ITEM(...) SNDRV_CTL_TLVD_ITEM(SNDRV_CTL_TLVT_DB_RANGE, __VA_ARGS__)
 #define SNDRV_CTL_TLVD_DECLARE_DB_RANGE(name,...) unsigned int name[] = { SNDRV_CTL_TLVD_DB_RANGE_ITEM(__VA_ARGS__) }
 #define SNDRV_CTL_TLVD_DB_GAIN_MUTE - 9999999